期刊
MATERIALS LETTERS
卷 63, 期 23, 页码 2051-2054出版社
ELSEVIER
DOI: 10.1016/j.matlet.2009.06.050
关键词
Graphene; Nanomaterials; Atomic force microscopy; Magnetic stirring; Centrifugation; Separation
资金
- New Century Excellent Talents in the University of China [NCET-07-0626]
- Shanghai Science and Technology Committee [08160706900]
- The National High Technology Research and Development Program of China [2009AA05Z419]
Reduced graphene oxide (RGO) nanosheets were produced by chemical reduction of exfoliated graphite oxide. Atomic force microscopy (AFM) images show that the obtained RGO nanosheets vary greatly in lateral-dimensional sizes, ranging from less than 100 100 nm to more than 2000 2000 nm. In order to separate these nanosheets, one simple and low-cost method mainly based on magnetic-stirring and centrifugation treatments was proposed. Preliminary statistical analysis of RGO nanosheets, based on AFM images, shows that the dot-like RGO nanosheets (with lateral dimensions less than 100 100 nm) and leaf-like RGO nanosheets (with lateral dimensions more than 500 500 nm) were effectively separated by this simple method. (C) 2009 Elsevier B.V. All rights reserved.
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